Numbers beginning with 203-300

Danbury, a city in northern Fairfield County, Connecticut, United States, approximately 70 miles from New York City. Danbury's population at the 2010 census was 80,893. Danbury is the fourth most-populous city in Fairfield County, and seventh among Connecticut cities. The city is located within the New York metropolitan area. source

Area code 203 is a North American telephone area code that covers the southwestern part of Connecticut, and is overlaid with area code 475. The area codes stretch from Connecticut's western border, along its southern coast, to Madison, and north to Meriden. (The rest of Connecticut is served by the 860 area code, which is expected to be overlain with 959 on August 30, 2014.) The region encompassed by 203 and 475 roughly corresponds to the Connecticut side of the New York metropolitan area. Prior to August 28, 1995 (when the split with 860 took effect), area code 203 encompassed all of Connecticut. source